Police are encouraging people in the Bay of Plenty to check the currency they receive following fake notes being presented at various business recently.

"If you have concerns report it to Police, and or take the cash in to your local station," says a Police spokesperson.

"We are happy to assist people who have concerns over the authenticity of their notes."

The fake notes were presented at various businesses recently, prompting police to make enquiries about the source.

It is an offence to make, use or be in possession of counterfeit notes.

Businesses should not accept a fake banknote, but if anyone has one already, they should put it in an envelope and contact police.

There are three quick ways to check notes according to the Reserve Bank - click here to read more. There is also a more detailed guide available on the website on how to check the authenticity of notes.

Any further information in the manufacturing of any counterfeit notes can be provided to police on 105 or be given anonymously via Crimestoppers on 0800 555 111.